Question: Was Franz Boas an established member?
Paraphrase: Was Franz Boas an set up member?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q76857 wdt:P463 ?X . ?X wdt:P571 ?answer}
Answer: 1863-03-03T00:00:00Z, 1847-01-01T00:00:00Z, 1700-07-11T00:00:00Z, 1780-05-04T00:00:00Z, 1652-01-01T00:00:00Z, 1759-01-01T00:00:00Z, 1742-01-01T00:00:00Z